A Sydney teenager has been jailed for at least 12 years for preparing for a terrorist act which was to involve the use of fixed-blade knives in 2016.
A Sydney teenager has been jailed for at least 12 years for preparing for a terror attack which was "imminent" when the "unequivocally committed terrorist" was arrested near a courthouse and police station.
The now 18-year-old, who was found guilty by a Supreme Court jury in September, has admitted he sympathised with Islamic State when he bought fixed-blade knives from a gun shop in 2016.
But the teenager, who can't be named for legal reasons, has continued to deny any plan to use the weapons in a terror attack and insists he bought them for "outdoor recreation - going hunting, going camping, et cetera".
Justice Geoffrey Bellew on Tuesday said the denial flew in the face of overwhelming evidence when he sentenced the teenager to 16 years in prison with a non-parole period of 12 years.
"At the time of his arrest, the offender was ready, willing and able to carry out a terrorist act," the judge said.
He was satisfied the teenager was "an unequivocally committed terrorist" and an attack was imminent when he was arrested with another boy at a Bankstown prayer hall on October 12, 2016.
Police at the time seized two backpacks which contained two knives, several items of clothing, neck gaiters capable of being used as disguises and a handwritten pledge of "allegiance to the Caliph".
It came a little over a month after the teenager downloaded an ISIS magazine which mentioned Bankstown, in an article urging readers to "alleviate the pain afflicting the hearts of the Muslims by striking the kuffar in their homelands".
"Kill them on the streets of Brunswick, Broadmeadows, Bankstown, and Bondi. Kill them at the MCG, the SCG, the Opera House and even in their backyards," the magazine said.
Later, the would-be terrorist downloaded another edition of the magazine recommending the use of fixed-blade knives - "characteristically the strongest kind of knife" - in an attack.
The teenager, who held radical religious views from as young as 12, gave evidence at his sentence hearing that he sympathised with ISIS at the time of his arrest but didn't support them.
He said he was a "dumb, immature kid" who was "led like a sheep" but he'd since abandoned extremism and continued to proclaim his innocence of the terror charge.
Justice Bellew on Tuesday rejected the teenager's "nonsensical" and "fanciful" claims of an interest in hunting and camping and didn't accept that his immaturity contributed to his crime.
Regarding the 18-year-old's prospects of rehabilitation, the judge said his evidence, at its highest, could suggest he'd taken tentative steps to move away from extremist ideology.
His sentence was backdated to his arrest, meaning he'll be 28 when he's eligible for parole in October 2028.